A different colour and cut of dress and less eye make up will expose the subjective perception of fashion writers everywhere. Keira Knightley's collarbone, the top of her chest, jaw and arms are exactly the same size but when she puts on a dress with a full skirt that doesn't expose her rib cage the credulous will happily believe that she's healthier than she was a few months ago. That's not to say that I think she's unhealthy, I'm aware that if I stopped eating meat, cake and other sweets, the odd roast dinner and fried breakfast and exercised regularly I could probably be the size of Keira Knightley within a couple of months and I would be healthier than I am now. All media is fickle and a little ignorant of clothes.